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Elanso [62]
3 years ago
9

Solve the equation:   1.4x - 2.8 = 4.2 a 5 b 10 c 0.5 d 7

Mathematics
1 answer:
aliya0001 [1]3 years ago
6 0
The correct answer is 5
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the length of the sides of a square are initially 0 cm and increase at a constant rate of 11 cm per second. suppose the function
Likurg_2 [28]

The function of the area of the square is A(t)=121t^{2}

Given that The length of a square's sides begins at 0 cm and increases at a constant rate of 11 cm per second. Assume the function f determines the area of the square (in cm2) given several seconds, t since the square began growing and asked to find the function of the area

Lets assume the length of side of square is x

\frac{dx}{dt} = 11 \frac{cm}{sec}

⇒x=11t

Area of square=(length of side)^{2}

Area of square=(11t)^{2}{as the length of side is 11t}{varies by time}

Area of square=121t^{2}

Therefore,The function of the area of the square is A(t)=121t^{2}

Learn more about The function of the area of the square is A(t)=121t^{2}

Given that The length of a square's sides begins at 0 cm and increases at a constant rate of 11 cm per second. Assume the function f determines the area of the square (in cm2) given several seconds, t since the square began growing and asked to find the function of the area

Lets assume the length of side of square is x

\frac{dx}{dt} = 11 \frac{cm}{sec}

⇒x=11t

Area of square=(length of side)^{2}

Area of square=(11t)^{2}{as the length of side is 11t}{varies by time}

Area of square=121t^{2}

Therefore,The function of the area of the square is A(t)=121t^{2}

Learn more about area here:

brainly.com/question/27683633

#SPJ4

3 0
2 years ago
Select the correct answer,
Inessa05 [86]

Answer:

B. It is too risky to use credit cards online, and online payment services have better security because of the increasing number of hackers that may steal money from your bank account.

Step-by-step explanation:

7 0
3 years ago
The area of a trapezium is 35cm2.find its altitude if the bases is 6cm and 8cm​
r-ruslan [8.4K]

Answer: altitude: 5 cm

Explanation:

\sf \dfrac{1}{2}  ( a + b) h = Area \ of \ trapezium

[ <u>a and b are bases, h is the altitude</u> ]

Here given:

  • Area = 35
  • a = 6
  • b = 8
  • h = ?

Solve for altitude:

\sf \rightarrow \sf \dfrac{1}{2}  ( 6 + 8) h = 35  \ \  \  \Rightarrow  \ \ \ \dfrac{1}{2}  ( 14) h = 35 \ \ \ \ \Rightarrow   \ \ \  \ 7 h = 35 \ \ \ \  \Rightarrow \ \   h = \dfrac{35}{7} \   =  \  5

7 0
1 year ago
A.<br><br> b.<br><br> c.<br><br> d.<br> please help me
Yuliya22 [10]

Answer:

b

Step-by-step explanation:

the answer is - 11/12

6 0
3 years ago
Please help with this question!
mart [117]

Answer:

($4.00/x)+($4.50/y)

Step-by-step explanation:

we know that

Apples cost 80 cents for x apples

so

One apple cost $0.80/x

Oranges cost 75 cents for y oranges

so

One orange cost $0.75/y

Find the cost of 5 apples and 6 oranges

Multiply the number of apples by the cost of one apple and multiply the number of oranges by the cost of one orange

so

5($0.80/x)+6($0.75/y)=($4.00/x)+($4.50/y)

7 0
3 years ago
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